package com.example.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@SpringBootApplication
public class Demo4Application {
    @RequestMapping("/")
  string index(){
        String s = "hello spring boot";

  }


    public static void main(String[] args) {
        SpringApplication.run(Demo4Application.class, args);
    }

}
